2g of a non-volatile non-electrolyte solute is disolved in 200g of...

2g

of a non-volatile non-electrolyte solute is disolved in

200g

of two different solvents

A

and

B

whose ebullioscopic constants are in the ratio of

1: 8

. The elevation in boiling points of

A

and

B

are in the ratio

\dfrac{x}{y}\left(x: y\right)

. The value of

y

is____(Nearest Integer)

Correct answer

Step-by-step solution

Given : $\dfrac{{\left({K}_{b}\right)}_{A}}{{\left({K}_{b}\right)}_{B}} = \dfrac{1}{8}$

$∴ \dfrac{{\left({\Delta T}_{B}\right)}_{A}}{{\left({\Delta T}_{B}\right)}_{B}} = \dfrac{{\left({K}_{b}\right)}_{A} \cdot m}{{\left({K}_{b}\right)}_{B} \cdot m} = \dfrac{1}{8} = \dfrac{x}{y}$

$∵ \dfrac{x}{y} = \dfrac{1}{8}$

$∴ y = 8$ (nearest integer)

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